Afghans Worry About Fallout of a Syria Strike

Concerns Center on Potential for Disrupted Trade Ties With Iran

HERAT, Afghanistan—Residents of western Afghanistan are bracing for the possible fallout from a U.S. strike on Syria, worried America's entry into conflict could disrupt their trade ties with neighboring Iran—or expose them to potential Iranian retaliation.

Iran is a close ally of Syrian President Bashar al-Assad, and the commander of Iran's elite Revolutionary Guard Corps warned this week that the consequences for an attack...